Sonic & All-Stars Racing Transformed
is releasing digitally for PC on January 31, along with the Pyro, Heavy and Spy from Team Fortress 2.
With the help of Valve, these characters will be added to the roster, along with two others, on release day.
Shogun, from the Total War series, and Manager Man, from Football Manager, will also be available from the outset.
Sonic & All-Stars Racing Transformed will be available for download for $29.99.